Analysing power for 12C(n,n0,1)12C and evaluation of n-12C scattering at 18.2 MeV

The analysing power Ay( theta ) for ¹²C(n,n) ¹²C elastic scattering and for inelastic scattering to the first excited state (J^pi=2⁺, Q=-4.44 MeV) of ¹²C was measured at 18.2 MeV. A pulsed polarised neutron beam was produced via the ²H(d,n)³He polarisation transfer reaction. The A y data, together with published cross sections, were analysed in the framework of the spherical optical model and in the coupled-channels formalism. A phase-shift analysis at 18.2 MeV gives supporting evidence for a broad ⁵/2⁺ resonance. The ¹²C recoil kerma factors and values for the n+¹²C reaction cross section were deduced and compared with previous estimates and predictions.

Duke Scholars

Author Werner Tornow Physics

Author Calvin R. Howell Physics